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电力系统中性点接地是属于保护接地,它是保证电力系统安全可靠运行的重要条件。( )(1分)加油!必过!
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正确
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错误
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【单选题】有一直齿圆柱齿轮,m=4,z=36,它的分度圆直径为 。
A.
124
B.
134
C.
144
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )。
A.
152
B.
134
C.
144
D.
140
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径d为( )。
A.
152
B.
134
C.
144
D.
140
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
A.
152.0
B.
134.0
C.
144.0
D.
140.0
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
A.
152
B.
134
C.
144
D.
140
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【单选题】Johann Fust probably helped Gutenberg by
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providing experiment equipment
B.
setting up a press
C.
providing money
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【简答题】简述双子叶植物叶的结构。
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【简答题】Johann Gutenberg, who worked as a goldsmith (金匠), took what had already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks ...
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【简答题】Johann Gutenberg, who worked as a goldsmith(金匠)，took what has already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks of...
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【单选题】有一直齿圆柱齿轮,m=4,z=36,它的分度圆直径为 。
A.
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )。
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
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【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
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【单选题】Johann Fust probably helped Gutenberg by
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setting up a press
C.
providing money
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【简答题】简述双子叶植物叶的结构。
查看完整题目与答案
【简答题】Johann Gutenberg, who worked as a goldsmith (金匠), took what had already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks ...
查看完整题目与答案
【简答题】Johann Gutenberg, who worked as a goldsmith(金匠)，took what has already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks of...
查看完整题目与答案
【简答题】简述双子叶植物叶片的结构
查看完整题目与答案